I'm a beginner at Linux OS's and thought I'd start learning. To do so I decided to install Ubuntu on a partition on my late 2013 15" mbpr, currently running mac os 10.13.
I followed this guide:
and all was well until I realized I needed 16.04 not 17.10 (for ROS). In an attempt to re-install ubuntu I erased the partition I made for Ubuntu, but already at this stage the disk manager was showing strange things. The Ubuntu partition was grayed out, and when I removed that partition, my Macintosh HD partition ended up as an external drive.
I thought this could be solved by a reboot, but upon booting a broken GRUB interface turned up (I have rEFind installed as mentioned in the tutorial). I managed to re-install Ubuntu using the USB-stick I had prepared prior to my reboot but I can't seem to get access to my mac OS partition. To clarify, this was not an issue prior to fiddling around in the disk manager.
What I have tried so far:
- Booting using the option key: Shows "Windows" (not bootable) and "Boot EFI" (Ubuntu).
- Resetting NVRAM: No change.
I'm thinking I need to mount my mac OS partition again somehow.
My partitions look like this:
Device Start End Sectors Size Type /dev/sda1 40 409639 409600 200M EFI System /dev/sda2 409640 764763055 764353416 364,5G unknown /dev/sda3 976842880 977105023 262144 128M unknown /dev/sda4 764764160 976842751 212078592 101,1G Linux filesystem
where sda2 is my mac os partition.
Any suggestions? I'd very much like to avoid formatting the mac OS partition without gaining access to the documents on it first.